Send javax.mail.internet.MimeMessage to a recipient with a name other than ASCII?

Question

I am writing a piece of Java code that should send mail to users with names other than ASCII. I figured out how to use UTF-8 for body, topic, and general headers, but I still stick with the recipients .

That's what I need to in the "To:": "ウィキペディアにようこそ" <[e-mail]>. It lives (for our purposes today) in a line called recip.

• msg.addRecipients(MimeMessage.RecipientType.TO, recip) gives "忙俾ェ▎S]" <[e-mail]>
• msg.addHeader("To", MimeUtility.encodeText(recip, "utf-8", "B")) throws AddressException: Local address contains control or whitespace in string ``=?utf-8?B?IuOCpuOCo+OCreODmuODh+OCo+OCouOBq+OCiOOBhuOBk+OBnSIgPA==?= =?utf-8?B?Zm9vQGV4YW1wbGUuY29tPg==?=''

How the hell should I send this message?

---

Here's how I handled the other components:

• HTML body: msg.setText(body, "UTF-8", "html");
• Headers: msg.addHeader(name, MimeUtility.encodeText(value, "utf-8", "B"));
• Subject: msg.setSubject(subject, "utf-8");

Answer 1

, , :

/**
 * Parses addresses and re-encodes them in a way that won't cause {@link MimeMessage}
 * to freak out. This appears to be the only robust way of sending mail to recipients
 * with non-ASCII names. 
 * 
 * @param addresses  The usual comma-delimited list of email addresses.
 */
InternetAddress[] unicodifyAddresses(String addresses) throws AddressException {
    InternetAddress[] recips = InternetAddress.parse(addresses, false);
    for(int i=0; i<recips.length; i++) {
        try {
            recips[i] = new InternetAddress(recips[i].getAddress(), recips[i].getPersonal(), "utf-8");
        } catch(UnsupportedEncodingException uee) {
            throw new RuntimeException("utf-8 not valid encoding?", uee);
        }
    }
    return recips;
}

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Answer 2

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[0]:

InternetAddress[] recips = InternetAddress.parse(addresses, false);

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new InternetAddress(recips[i].getAddress(), recips[i].getPersonal(), "utf-8");

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recip = MimeUtility.encodeText(recip, "utf-8", "B");
InternetAddress[] addressArray = InternetAddress.parse(recip , false);
msg.addRecipients(MimeMessage.RecipientType.TO, addressArray);